Doffing brush cylinder



Nov. 8, 1938. J. w. BEHLE DOFFING BRUSH CYLINDER Filed Aug. 9, 1937 @Hmm/Mt,

Patented Nov. 8, 1938 DOFFING BRUSH CYLINDER Joseph W. Behle, Dallas, Tex., assigner to The Murray Company, Dallas, Tex., a corporation of Texas Application August 9, 1937, Serial' No. 158,109

11 Claims.

This invention relates to new and useful improvements in dofling brush cylinders.

One object of the invention is to provide an improved doiiing brush cylinder which is particularly adapted' for use iny cleaners, extractors,

andother cotton machines for removing cotton from ther saw' cylinders of such machines.

An important object of the invention is to provide an improved brush cylinder wherein metallic '10 heads or supporting members are formed with peripheral recesses to receive the brush bars, together with improved arcuate retaining elements for holding said bars in place, said elements also acting to form the surface of the cylinder, where- 5 by a hollowr cylinder having a substantially continuous surface is had.

' Another object of the invention is to provide an improved cylinder of the character described, wherein the recesses in each supporting head which receive the brush bars have extended flanges surrounding said recesses and disposed at right angles to the face of the head, whereby said flanges frictionally engage the bars to aid in' holding said bars in position Within the recesses; 2 said flanges being either an integral part of the head or being attached thereto in a suitable manner.

A further object of the invention is to provide an improved dofng brush cylinder which is so constructed that its parts may be stamped, which eliminates casting and machining operations, whereby more accurate manufacture at reduced costs, is made possible.

A construction designed to carry out the invention will be hereinafter described,together with other features of the invention.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawing, in

which an example of the invention is shown, and

wherein:

Figure 1 is a view, partly in section and partly in elevation of a dofng brush cylinder, constructed lin accordance with the invention,

Figure 2 is a transverse, sectional view, taken on the line 2--2 of Figure 1,

YFigure 3 is a partial perspective View of one of the heads, and y Figure 4 is an enlarged, sectional detail, taken through one of the recesses in the head.

In the drawing, the numeral I0 designates a metallic end head or plate which is circular in shape and which is formed with an inwardly directed annular flange II at its periphery. Two of these heads4 are. provided, one for each endv of the assembly and each head has a central opening I2 therein. A supporting shaft I3r extends through theopening l2 of the heads and is secured to said head by means of bearing collars I4. Each collar surrounds the shaft adjacent the inner side of one of the heads and is fixed on said shaft by means of set screws I5. An outwardly directed flange I6 on the collar engages the inner surface of the head and isvriveted or otherwise secured thereto. Since the heads I0 form the ends of the cylinder assembly, they are of course, spaced from each other on the shaft.

A plurality of intermediate anged heads IB whichv are constructed in the same manner as the end heads Ill",y are mounted on the shaft S3 at spaced intervals between the end heads i0. These intermediate heads have central openings I2 through which the shaft extends but said intermediate heads are not secured to the shaft, being merely rotatable thereon and held in their spaced position as will be hereinafter explained. The endheads I0 and the intermediate heads It support longitudinal brush bars I'l which extend longitudinally of the cylinder and which have the usual outwardly projecting bristlesv it suitably mounted therein. Any desired number of brush bars may be provided around the circular heads and since the bars are mounted within each head in exactly the same manner, it is believed that a description of one head will suffice.

Each head is formed with a plurality of radial recesses Ii9` in its peripheral portion and each recess is substantially square so as to receive one of the brush bars I'l, which is also substantially square in cross-section. However, it is pointed out that the size and shape of both recess and bar are subject to variation. The peripheral flange IIv of the head is of course, cut away above each recess to permit insertion of the bar (Figures 2 and 3). asl shown at I9 and this reduced portion is equal to the width of the bar I1 so that said bar has a tight fit therein. A fiange 20 extends laterally from thev bottom of the recess and when the bar is in position, it rests on this flange as is clearly shown in Figure 2, whereby an increased seating surface for the bar is provided.

The outer portion of the recess I9 is slightly wider than the bar IlA and to prevent movement of the bar within this portion of the recess, radial flanges 2| are disposed one on each side of the recess I9, as is clearly shown in Figure 3. These flanges are preferably an integral part of the head, being bentv at right angles to. the surface of said head. It is also preferable to form Each recess is reduced at its lower end L hold the bar Within the recess.

the bottom ange 20 by bending a portion of the head or plate as shown in the drawing. Manifestly'the side anges 2| take up the clearance between the sides of the bar I'I and the enlarged portion of the recess I9, whereby said side iianges snugly engage the sides of the bar. The flanges are metallic and have a certain amount of inherent resiliency and therefore act to frictionally In the event that the side flanges spread through use it is only necessary to bend them inwardly toward each other and obviously they will always snugly engage the sides of the bar I1. v

An equal number of recesses is formed in each of the heads I0 and Ill' and when the heads are mounted on the shaft I3, said recesses are longitudinally alined with each other, whereby the longitudinal brush bars I'I may be inserted therein. The bars are of such length that their ends terminate within the recesses of the end heads IB (Figure 1)'. After the bars are in position within the recesses, arcuate retaining sheets 22 are secured by rivets, or otherwise, to the annular iianges II of the heads I0 and I0'. As is clearly shown in Figure 2 one of the sheets is located between the brush bars II, and eachsheet extends substantially throughout the length of the cylinder. The width of each sheet is such that its longitudinal edges overlie the longitudinal edges of the brush bars I1 on each side thereof an'd manifestly, the sheets prevent displacement of the bars from the recesses I9, whereby said bars are iirmly held inV place therein. The sheets not only serve to hold the bars in positionbut due to their curvature form a substantially continuous surface, whereby cotton or other material cannot fall between the heads and bars when the cylinder is being used.

From the above, it will be seen-that a very simple and sturdy structure is produced. The heads may be easily stamped out which not only rcduces the cost, but also assures all of the heads being of the same size. The flanges 20 at the base of the recesses I9 provide an amplified area on which the brush bars rest, whilethe side flanges 2I firmly hold the. bars against lateral displacement. The curved retaining sheets confine the bars within the recesses and form the surface of the cylinder, and removal of the sheets allows the bars II to be readily removed for. repair or replacement. They flanges II on the heads not only provide ready accessible means for attaching the sheets but also Aadd-rigidity to the structure as they strengthen the heads.

What I claim and desire to secure by Letters Patent is:

1. A dofling cylinder for cotton machines including, end members each having recesses formed around its marginal portion, longitudinal brush bars extending between the members and mounted in corresponding recesses of the members, each member having a peripheral flange, and means engaging the brush bars and secured to the anges of the members for retaining said bars within said recesses.

2. A dofling cylinder for cotton machines including, end` members each having recesses formed around its marginal portion, longitudinal brush bars extending between the members and mounted in corresponding recesses of the mem bers, each member having a peripheral ange, and means overlying the longitudinal edge portions of the bars and secured to the flanges of the members for retaining said bars within said recesses.

3. A doflng cylinder for cotton machines lncluding, end members each having recesses formed around its marginal portion,rlongitudina1 brush bars extending between the members and mounted in corresponding recesses 'of the mem- Y bers, and a plurality of curved retaining sheets located between the bars and secured to the members, each sheet having its longitudinal edge portions overlying the edge portions of the bars on each side thereof to retain said bars Within their recesses.

4. A doing cylinder for cotton machines including, end members each having recesses formed around its marginal portion, longitudinal brush' bars extending between the members and mounted in corresponding recesses of the members, and a plurality of curved retaining sheets located between the bars and secured to Vthe members each sheet having its longitudinal edge portions overlying'the edge portions of the bars on eachside thereof to retain said bars withinV their recesses, said sheets being substantially equal in lengthto the length of the bars whereby said sheets form the outer surface of the cylinder.

5. A dcflingY cylinder for cotton machines including, peripherally flanged end members each having recesses formed around its marginal portion, intermediate peripherally flanged supporting members located between the end members, eachv intermediate member having recesses around its marginal portion, longitudinal brush bars mounted in corresponding recesses of the end and intermediate members, and means engaging the brush bars and secured to the peripheral flanges of both the end and intermediate members for retaining the bars within the recesses.`

6. A doiiing cylinder for cotton machines'including, a'nged end members each having recesses formeduaround its marginal portion, intermediate flanged supporting members located between the end members'each intermediate member having recesses around its marginal portion,

longitudinal brush bars mounted in correspond- 'ing recesses of the end and intermediate members, and a plurality of arcuate retaining sheets located between the bars andseCured to the flanges of the end and intermediate members, each sheet having its 'longitudinal edgelportions overlying the edge portions of the bars on each` side thereof for retaining said bars within'the recesses.

7. A cloning cylinder for cotton machines including, flanged end members each having recesses formed around its marginalV portion,.inter mediate flanged supporting members located between the end members, each intermediate member having recesses around its marginal portion.

longitudinal brush bars mounted in corresponding recesses of the end and intermediate memberaand a plurality of arcuate retaining sheets located between the bars and secured to the flanges of the end and intermediate members,

each Vsheet having its longitudinal edge portions` flange at the base of each recess and being engaged by the side anges, and cylinder closure means extending between and engaging the outer surface of the brush bars and secured to the end members for retaining the bars within the recesses.

9. A doing cylinder for cotton machines including, circular end members, each having a plurality of. recesses formed in its marginal portion, a laterally directed flange at the base of each recess, side flanges on each side of each recess, longitudinal brush bars insertable within the recesses, each bar resting against the flange at the base of each recess and being engaged by the said anges, and curved means overlying the j uppermost longitudinal edge portions of the bars and secured to the members for retaining said bars `within said recesses, whereby the curved means forms a substantially continuous surface.

10. A doing cylinder for cotton machines including, circular end members, each having a plurality of recesses formed in its marginal portion, a laterally directed flange at the base of each recess, side flanges on each side of each recess, longitudinal brush bars insertable within the recesses, each bar resting against the ilange at the base of each recess and being engaged by the side flanges, and a plurality of curved retaining sheets located between the bars and secured to the members each sheet having its longitudinal edge portions overlying the edge portions of the bars on each side thereof to retain said bars within their recesses.

11. A doing cylinder for cotton machines including, circular end members, each having a plurality of recesses formed in its marginal portion, a laterally directed ilange at the base of each recess, side flanges on each side of each recess, longitudinal brush bars insertable within the recesses, leach bar resting against the flange at the base of each recess and being engaged by the side anges, and a plurality of curved retaining sheets located between the bars and secured to the members each sheet having its longitudinal edge portions overlying the edge portions of the bars on each side thereof to retain said bars within their recesses, said sheets being substantially equal in length to the length of the bars whereby said sheets form the outer surface of the cylinder.

JOSEPH W. BEHLE. 

